CN202177101U - Preheating type radiant tube combustion gas burner - Google Patents
Preheating type radiant tube combustion gas burner Download PDFInfo
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- CN202177101U CN202177101U CN2011202662268U CN201120266226U CN202177101U CN 202177101 U CN202177101 U CN 202177101U CN 2011202662268 U CN2011202662268 U CN 2011202662268U CN 201120266226 U CN201120266226 U CN 201120266226U CN 202177101 U CN202177101 U CN 202177101U
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- tube
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- burner
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- radiant tube
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model provides a preheating type radiant tube combustion gas burner, belonging to combustion gas heating devices. an air guiding tube (5) is coaxially sleeved at the external of a burner (4), a heat exchange tube (10) is coaxially sleeved at the external of the air guiding tube (5), a burner installing seat (6) is also provided with an exhaust gas discharge opening (13), radial gaps among the air guiding tube (5), the heat exchange tube (10), and a gas discharging hole (14) are provided, the other end of the air guiding tube (5) is contracted to be a flame nozzle (9), a tube wall at the central section of the air guiding tube (5) is provided with a gas inlet (11), the other end of the heat exchange tube (10) is contracted to be a secondary air nozzle (12), a flame tube (15) is also disposed in the radiant tube (2), high temperature exhaust gas is used to preheat combustion air and improve theoretical combustion temperature, also, exhaust gas in an entrainment part participates in combustion, realizing high temperature air lean-oxygen combustion, making flame temperature more uniform, reducing discharge of harmful gas, and reaching purpose of energy-saving and environmental protection.
Description
Technical field
The utility model relates to the heater of a kind of heating furnace or Equipment for Heating Processing, relates in particular to a kind of self-preheating type radiant tube fuel burner nozzle.Belong to combustion gas firing equipment technical field.
Background technology
Chinese patent publication number: CN101839484A, open day: on September 22nd, 2010, denomination of invention " gas nozzle structure of radiant tube "; Comprise and have capping and in capping, dispose the radiant tube body that air is introduced interface and gas service pipe; Described gas nozzle structure comprises the fuel burner nozzle body, constitutes the air inlet gap between this fuel burner nozzle body and the said radiant tube body, and described fuel burner nozzle body is the structure of cone shape cylindrical chamber; And the small-caliber end of fuel burner nozzle body is an air inlet; Towards described capping, be provided with the helical form flow deflector at the outer surface of fuel burner nozzle body, in the cavity volume of fuel burner nozzle body, be provided with the spiral orifice plate; One end of described gas service pipe passes the center of spiral, and the other end is stretched over outside the capping.This technical scheme holds concurrently air and gas secondary mixed combustion structure and air and combustion gas mixed combustion structure gradually in one, and not only flameholding is convenient with control, and the length of flame is longer.But the air themperature that gets into the fuel burner nozzle body in this technical scheme is lower, and fuel gas buring heats up slow, and energy consumption is high, and ignition temperature is lower; The waste gas that burns in this technical scheme on the other hand is from the other end discharging of U type radiant tube, and combustion gas mixing is even inadequately, and the burning of combustion gas is also abundant inadequately; The efficiency of heating surface is still waiting to improve; In addition, also exist the zone of flame combustion too concentrated, the uniform inadequately defective of the heat distribution in the radiant tube; Be difficult to satisfy the needs of linear pattern radiant tube heating, be not suitable for the heating of linear pattern radiant tube and use.
Summary of the invention
The purpose of the utility model is that radiation pipe burner tip input air temperature is lower, combustion gas mixing is even inadequately to having now, and energy consumption is high, and ignition temperature is lower; The burning of combustion gas is abundant inadequately, defective that the thermal efficiency is lower and deficiency, and it is higher to propose a kind of input air temperature; The efficiency of heating surface is high, and fuel gas buring is abundant, and ignition temperature is high; Reasonable in design, and can be suitable for the self-preheating type radiant tube fuel burner nozzle that the linear pattern radiant tube uses.
The purpose of the utility model realizes in the following manner: a kind of self-preheating type radiant tube fuel burner nozzle comprises the Gas Pipe that is arranged on the burner mount pad, air intlet and ignitor; The port of export of Gas Pipe is provided with burner body; Burner body is the structure of cone shape cylindrical chamber, and the small-caliber end of burner body is air inlet, and ignitor is installed on the burner body; The outer, coaxial of said burner body is with an air conduit; The outer, coaxial of said air conduit is with a heat exchanger tube, and an end of said air conduit and heat exchanger tube all is fixed in the steam vent on the burner mount pad, also is provided with exhaust vent on the described burner mount pad; Described exhaust vent is connected with steam vent; All leave radial clearance between described air conduit, heat exchanger tube and the steam vent three, the other end of said air conduit is shrunk to flame jet in the place ahead of burner body heavy caliber end, and the air inlet of corresponding burner body is provided with air admission hole one time on the tube wall in air conduit stage casing; The other end of said heat exchanger tube is centered around the flame jet outside and is shrunk to the auxiliary air spout; And the other end of said air conduit and heat exchanger tube inserts in the radiant tube, also is placed with flame tube in the described radiant tube, leaves radial clearance between flame tube and the radiant tube.
The end that said air conduit is connected with the burner mount pad is provided with air inlet pipe, and air inlet pipe is passed heat exchanger tube and is connected with air intlet on the burner mount pad.
Described flame jet axial line is concentric with the longitudinal axis of burner body, and the diameter of said flame jet is 1/5～1/2 of an air conduit internal diameter, and the distance of said flame jet to burner body heavy caliber end is 1～3 with the ratio of burner body heavy caliber end diameter.
The outer surface of said flame tube is provided with the radial protrusion that matches with the radiant tube inwall, and the height of said radial protrusion is 1/4～1/8 of a flame tube internal diameter.
The distance of described flame tube to flame jet is 1/4～1 with the ratio of flame tube internal diameter.
Described air conduit, heat exchanger tube and flame tube all adopt carborundum to process.
Compared with prior art the utlity model has following tangible advantage:
1. the setting of the utility model air conduit and heat exchanger tube makes air get into burner body from an air admission hole and realized the once combustion-supporting of air, and is from the ejection of auxiliary air spout, real combustion-supporting to the secondary of combustion flame again, guaranteed the abundant burning of combustion gas.The Cryogenic air because the inwall of heat exchanger tube flows, the outer wall high-temp waste gas that flows, high-temp waste gas carries out preheating through heat exchanger tube to combustion air, can use the high-temp waste gas after the burning to come warm-up combustion-supporting air, and the raising theoretical temperature combustion reaches purpose of energy saving.
2. the volume of the utility model burner integral body is little; Do not take the inner space of radiant tube; The flame tube thermal conductivity is good, and the one, between the outer wall of flame tube and radiant tube inwall, constituted the flow channel of high-temp waste gas, formed the loop of gas combustion and flow circuit in radiant tube inside; Increase the flowability of high-temperature gas, also be convenient to radiant tube internal heat and extraneous exchange.The 2nd, avoided the phenomenon of hot-spot in the radiant tube; Make the heat distribution in the radiant tube more even, the 3rd, the setting of flame tube also can be entrainmented the part high-temp waste gas and participated in burning between flame jet and flame tube; Realize the high temperature air combustion with meagre oxygen; Make flame temperature more even, reduced the oxynitrides discharge of harmful gases, also reach the purpose of environmental protection.
3. the air conduit of the utility model, heat exchanger tube and flame tube all are to adopt silicon carbide reaction-sintered to process, and have advantages such as heatproof height, heat conduction are good, light weight, long service life.The burner mounting seat adopts the double Shell of Birmasil, and it has in light weight, good heat dissipation, compact conformation, advantage such as easy to loading and unloading.
4. the utility model burner is simple in structure, and processing and fabricating is convenient, and cost is lower.Can be suitable for all gases fuel, like coke-stove gas, mixed gas, natural gas etc.Can be widely used in industries such as Ferrous Metallurgy, construction material, refractory material, glass, pottery, be particularly suitable for the heat-treatment furnace of logical protective atmosphere in the stove.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure, Gas Pipe 1, radiant tube 2, ignitor 3, burner body 4, air conduit 5; Burner mount pad 6, air inlet pipe 7, air intlet 8, flame jet 9,10, air admission holes 11 of heat exchanger tube; Auxiliary air spout 12, exhaust vent 13, steam vent 14, flame tube 15, radial protrusion 16.
The specific embodiment
Below in conjunction with the description of drawings and the specific embodiment the utility model is done further to describe in detail:
Referring to Fig. 1, a kind of self-preheating type radiant tube fuel burner nozzle of the utility model comprises the Gas Pipe 1 that is arranged on the burner mount pad 6; Air intlet 8 and ignitor 3, the port of export of Gas Pipe 1 is provided with burner body 4, and burner body 4 is the structure of cone shape cylindrical chamber; And the small-caliber end of burner body 4 is an air inlet, and ignitor 3 is installed on the burner body 4, and the outer, coaxial of said burner body 4 is with an air conduit 5; The outer, coaxial of said air conduit 5 is with a heat exchanger tube 10, and an end of said air conduit 5 and heat exchanger tube 10 all is fixed in the steam vent 14 on the burner mount pad 6, also is provided with exhaust vent 13 on the described burner mount pad 6; Described exhaust vent 13 is connected with steam vent 14; All leave radial clearance between described air conduit 5, heat exchanger tube 10 and steam vent 14 threes, wherein, the radial clearance between air conduit 5 and the heat exchanger tube 10 has constituted the circulating line that air flows; The other end of said air conduit 5 is shrunk to flame jet 9 in the place ahead of burner body 4 heavy caliber ends; Promptly form a combustion chamber at the front end of burner body 4, the air inlet of corresponding burner body 4 is provided with 11, air admission holes 11 of an air admission hole and is opened on the tube wall of air conduit 5 on the tube wall in air conduit 5 stage casings; Air in the above-mentioned air circular passage is from an air admission hole 11; Get in the endoporus of air conduit 5, the small-caliber end from burner body 4 gets into the cylindrical chamber of burner body 4 again, and the other end of said heat exchanger tube 10 is centered around flame jet 9 outsides and is shrunk to auxiliary air spout 12; Auxiliary air spout 12 is an annular; Air in the above-mentioned air circular passage is from being centered around auxiliary air spout 12 ejections on flame jet 9 outer walls, and the burning gases that flame jet 9 is sprayed carry out the air-breathing second time, and the other end of said air conduit 5 and heat exchanger tube 10 inserts in the radiant tube 2; Also be placed with flame tube 15 in the described radiant tube 2, leave radial clearance between flame tube 15 and the radiant tube 2.Described burner mount pad 6 adopts the double Shell of Birmasils, and it has in light weight, good heat dissipation, compact conformation, advantage such as easy to loading and unloading.
When heat exchanger tube 10 inserts in the radiant tubes 2, and burner mount pad 6 is fixed on 2 last times of radiant tube, the radial clearance that radial clearance between flame tube 15 and the radiant tube 2 and heat exchanger tube 10 and steam vent are 14 has just constituted the passage of high-temp waste gas discharge.The diameter of said steam vent 14 equates with the internal diameter of radiant tube 2.The outer surface of said flame tube 15 is provided with the radial protrusion 16 that matches with radiant tube 2 inwalls, and the height of said radial protrusion 16 is 1/4～1/8 of flame tube 15 internal diameters.
The setting of radial protrusion 16 should not hinder the axial flow of gas between flame tube 15 outer surfaces and radiant tube 2 inwalls., on the cross section of flame tube 15, radial protrusion 16 general five equilibriums are uniformly distributed with, and the length of radial protrusion 16 and width are all less.In radiant tube 2, the distance of described flame tube 15 to flame jet 9 is 1/4～1 with the ratio of flame tube 15 internal diameters.Flame tube 15 is reserved certain distance with flame jet 9, through the jet of combustion flame, can entrainment part waste gas and participate in burning, has reduced discharge of harmful gases, and environment protecting is good.
When the fuel gas buring in the burner body 4; Its air flows to radiant tube 2 one ends from the inwall of heat exchanger tube 10, and the high-temp waste gas after the burning is mobile to burner mount pad 6 one ends along the outer wall of heat exchanger tube 10; Heat transferred leaked-in air with high-temp waste gas; Promptly combustion air is carried out preheating, improve the temperature of combustion air, reach purpose of energy saving.
For guaranteeing that above-mentioned air circular passage is connected with air intlet 8 on the burner mount pad 6; The end that said air conduit 5 is connected with burner mount pad 6 is provided with air inlet pipe 7, and air inlet pipe 7 is passed heat exchanger tube 10 and is connected with air intlet 8 on the burner mount pad 6.
For guaranteeing the combustion gas fully burning in the combustion chamber in the burner body 4, the distance of said flame jet 9 to burner body 4 heavy caliber ends is 1～3 with the ratio of burner body 4 heavy caliber end diameters.
The diameter of said flame jet 9 is 1/5～1/2 of air conduit 5 internal diameters.The diameter of flame jet 9 is big more, and outside the spout, the length of combustion flame is short more, and gas flow rate is slow more; The diameter of flame jet 9 is more little, and outside the spout, the length of combustion flame is long more, and gas flow rate is fast more.
For guaranteeing that the flame in the combustion chamber sprays from flame jet 9 smoothly, described flame jet 9 axial lines are concentric with the longitudinal axis of burner body 4.
Described air conduit 5, heat exchanger tube 10 and flame tube 15 all adopt carborundum to process, and have advantages such as heatproof height, heat conduction are good, light weight, long service life.
The course of work of the utility model is: combustion gas gets in the burner body 4 through Gas Pipe 1; Combustion air is from the air circular passage that air intlet 8 gets between air conduit 5 and the heat exchanger tube 10; And get into the burner body 4 from air admission hole, conducting ignitor 3, ignitor 3 is got angry and is lighted combustion gas; Flame elder generation is in the combustion chamber internal combustion of air conduit 5 inside; From flame jet 9 ejection, the air of combustion air from the air circular passage flow to the auxiliary air spout 12 of flame jet 9 outer walls again, and it is combustion-supporting that combustion flame is carried out secondary.Inject flame tube 15 pores of radiant tube 2 inside from the combustion flame of flame jet 9 ejections; And it is mobile to the front end of radiant tube 2; High-temp waste gas after the burning from the other end of flame tube 15 pores flow out and from the outer wall of flame tube 15 to return stream, when high-temp waste gas flow between flame tube 15 and the flame jet 9, the jet of flame jet 9 ejection combustion flames; Can entrainment the part high-temp waste gas and participate in burning; Remaining high-temp waste gas continues to flow to burner mount pad 6 one ends, and heats through flow air in heat exchanger tube 10 outer walls exchange heat pipe 10 inwalls, and high-temp waste gas is discharged from exhaust vent 13 through steam vent 14 more then.
Through overtesting: the gaseous-pressure of the utility model burner: 4-7KPa; Air pressure: 4-7KPa is adapted to all gases fuel, like coke-stove gas, mixed gas, natural gas etc.; Power output is adjustable in the 30-60KW scope, and ignition temperature is 1150-1300 ℃.Can be widely used in industries such as Ferrous Metallurgy, construction material, refractory material, glass, pottery, be particularly suitable for the heat-treatment furnace of logical protective atmosphere in the stove.
The utility model burner volume is little, and is easy to use, and the heating-up temperature in the radiant tube 2 is more even, and efficiency of combustion is high, has reduced the oxynitrides discharge of harmful gases, energy-conservation and environmental benefit is obvious, the long service life of burner.
Claims (6)
1. self-preheating type radiant tube fuel burner nozzle; Comprise the Gas Pipe (1) that is arranged on the burner mount pad (6); Air intlet (8) and ignitor (3); The port of export of Gas Pipe (1) is provided with burner body (4); Burner body (4) is the structure of cone shape cylindrical chamber, and the small-caliber end of burner body (4) is air inlet, and ignitor (3) is installed on the burner body (4); It is characterized in that: the outer, coaxial of said burner body (4) is with an air conduit (5); The outer, coaxial of said air conduit (5) is with a heat exchanger tube (10), and an end of said air conduit (5) and heat exchanger tube (10) all is fixed in the steam vent (14) on the burner mount pad (6), also is provided with exhaust vent (13) on the described burner mount pad (6); Described exhaust vent (13) is connected with steam vent (14); All leave radial clearance between described air conduit (5), heat exchanger tube (10) and steam vent (14) three, the other end of said air conduit (5) is shrunk to flame jet (9) in the place ahead of burner body (4) heavy caliber end, and the air inlet of corresponding burner body (4) is provided with an air admission hole (11) on the tube wall in air conduit (5) stage casing; The other end of said heat exchanger tube (10) is centered around flame jet (9) outside and is shrunk to auxiliary air spout (12); And the other end of said air conduit (5) and heat exchanger tube (10) inserts in the radiant tube (2), also is placed with flame tube (15) in the described radiant tube (2), leaves radial clearance between flame tube (15) and the radiant tube (2).
2. a kind of self-preheating type radiant tube fuel burner nozzle according to claim 1; It is characterized in that: the end that said air conduit (5) is connected with burner mount pad (6) is provided with air inlet pipe (7), and air inlet pipe (7) is passed heat exchanger tube (10) and is connected with air intlet (8) on the burner mount pad (6).
3. a kind of self-preheating type radiant tube fuel burner nozzle according to claim 1; It is characterized in that: described flame jet (9) axial line is concentric with the longitudinal axis of burner body (4); The diameter of said flame jet (9) is 1/5～1/2 of air conduit (a 5) internal diameter, and the distance of said flame jet (9) to burner body (4) heavy caliber end is 1～3 with the ratio of burner body (4) heavy caliber end diameter.
4. a kind of self-preheating type radiant tube fuel burner nozzle according to claim 1; It is characterized in that: the outer surface of said flame tube (15) is provided with the radial protrusion (16) that matches with radiant tube (2) inwall, and the height of said radial protrusion (16) is 1/4～1/8 of flame tube (a 15) internal diameter.
5. according to claim 1 or 4 described a kind of self-preheating type radiant tube fuel burner nozzles, it is characterized in that: the distance of described flame tube (15) to flame jet (9) is 1/4～1 with the ratio of flame tube (15) internal diameter.
6. a kind of self-preheating type radiant tube fuel burner nozzle according to claim 1 is characterized in that: described air conduit (5), heat exchanger tube (10) and flame tube (15) all adopt carborundum to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202662268U CN202177101U (en) | 2011-07-26 | 2011-07-26 | Preheating type radiant tube combustion gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202662268U CN202177101U (en) | 2011-07-26 | 2011-07-26 | Preheating type radiant tube combustion gas burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202177101U true CN202177101U (en) | 2012-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202662268U Expired - Fee Related CN202177101U (en) | 2011-07-26 | 2011-07-26 | Preheating type radiant tube combustion gas burner |
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| Country | Link |
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| CN (1) | CN202177101U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051761A (en) * | 2015-04-16 | 2016-10-26 | 大同特殊钢株式会社 | Radiant tube heating device |
| CN106122962A (en) * | 2016-08-08 | 2016-11-16 | 北京神雾环境能源科技集团股份有限公司 | A kind of regenerative gas radiant tube combustion device |
| CN107906513A (en) * | 2017-11-22 | 2018-04-13 | 西安科技大学 | A kind of U-shaped radiant tube combustion device of one-stroke countercurrent flow |
| CN115029684A (en) * | 2022-05-31 | 2022-09-09 | 四川铭能科技开发有限公司 | Gas heating deposition furnace and system |
-
2011
- 2011-07-26 CN CN2011202662268U patent/CN202177101U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051761A (en) * | 2015-04-16 | 2016-10-26 | 大同特殊钢株式会社 | Radiant tube heating device |
| CN106051761B (en) * | 2015-04-16 | 2019-04-26 | 大同特殊钢株式会社 | Radiant tube type heating device |
| TWI671493B (en) * | 2015-04-16 | 2019-09-11 | 日商大同特殊鋼股份有限公司 | Radiant tube type heating device |
| CN106122962A (en) * | 2016-08-08 | 2016-11-16 | 北京神雾环境能源科技集团股份有限公司 | A kind of regenerative gas radiant tube combustion device |
| CN107906513A (en) * | 2017-11-22 | 2018-04-13 | 西安科技大学 | A kind of U-shaped radiant tube combustion device of one-stroke countercurrent flow |
| CN115029684A (en) * | 2022-05-31 | 2022-09-09 | 四川铭能科技开发有限公司 | Gas heating deposition furnace and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20180726 |